MC6025-MP型断屑槽对车削力影响的试验研究

Effects of MC6025-MP Chip Breaking Groove on Turning Force

选用MC6025、UE6020、US735共3种牌号的不同断屑槽型:MP,MA,MS型刀片,采用正交实验法断续干式车削45#钢,通过三向测力仪测定了相同切削用量下不同槽型刀片的切削力。采用回归分析法推导出切削力与切削速度、背吃刀量、进给量的关系表达式,并获得不同槽型刀片对切削力的影响规律,通过极差分析进一步验证了上述结果。同时,试验结果得到了新型刀片MC6025的MP型槽的最适切削参数。分析结果表明:背吃刀量对MC6025-MP型刀片的切削力影响最大,对US735-MS影响最小;切削3要素对切削力影响的一般性结论对不同槽型刀片也是成立的。该实验范围内,新型刀片MC6025-MP的最适切削参数为:ap=0.05 mm,f=0.1 mm/r,v=56.9 m/min。

Three types of chip breaking groove （MP ／ MA ／ MS） of three kinds indexable inserts （MC6025 ／ UE6020 ／US735） were used testing dry-cutting for 45 steel by means of orthogonal experiment.The turning forces of different grooves under the same cutting parameters can be measured by dynamometer.A formula of cutting force and cutting speed,cutting depth,feed rate can be obtained through regression analysis method,and the experiment can also get the influence of different groove type inserts on turning forces which are further verified by range analysis method.At the same time,the results obtain the optimal cutting parameters of MP type groove of MC6025 insert.Analysis results show that cutting depth have the greatest influence on cutting force of MC6025-MP insert,minimum impact on that of US735-MS; General conclusion of the effect that three factors of on turning force is also formed for different groove inserts.In this study：the most appropriate cutting parameters for new insert MC6025-MP：ap =0.05 mm,f =0.1 mm/r,v =56.9m/min.